C++ ModuleDecl::isOnoneSupportModule方法代码示例

// Returns the callee of an apply_inst if it is basically inlinable.
SILFunction *swift::getEligibleFunction(FullApplySite AI,
                                        InlineSelection WhatToInline) {
  SILFunction *Callee = AI.getReferencedFunction();

  if (!Callee) {
    return nullptr;
  }

  // Not all apply sites can be inlined, even if they're direct.
  if (!SILInliner::canInline(AI))
    return nullptr;

  ModuleDecl *SwiftModule = Callee->getModule().getSwiftModule();
  bool IsInStdlib = (SwiftModule->isStdlibModule() ||
                     SwiftModule->isOnoneSupportModule());

  // Don't inline functions that are marked with the @_semantics or @_effects
  // attribute if the inliner is asked not to inline them.
  if (Callee->hasSemanticsAttrs() || Callee->hasEffectsKind()) {
    if (WhatToInline == InlineSelection::NoSemanticsAndGlobalInit) {
      if (shouldSkipApplyDuringEarlyInlining(AI))
        return nullptr;
      if (Callee->hasSemanticsAttr("inline_late"))
        return nullptr;
    }
    // The "availability" semantics attribute is treated like global-init.
    if (Callee->hasSemanticsAttrs() &&
        WhatToInline != InlineSelection::Everything &&
        (Callee->hasSemanticsAttrThatStartsWith("availability") ||
         (Callee->hasSemanticsAttrThatStartsWith("inline_late")))) {
      return nullptr;
    }
    if (Callee->hasSemanticsAttrs() &&
        WhatToInline == InlineSelection::Everything) {
      if (Callee->hasSemanticsAttrThatStartsWith("inline_late") && IsInStdlib) {
        return nullptr;
      }
    }

  } else if (Callee->isGlobalInit()) {
    if (WhatToInline != InlineSelection::Everything) {
      return nullptr;
    }
  }

  // We can't inline external declarations.
  if (Callee->empty() || Callee->isExternalDeclaration()) {
    return nullptr;
  }

  // Explicitly disabled inlining.
  if (Callee->getInlineStrategy() == NoInline) {
    return nullptr;
  }

  if (!Callee->shouldOptimize()) {
    return nullptr;
  }

  SILFunction *Caller = AI.getFunction();

  // We don't support inlining a function that binds dynamic self because we
  // have no mechanism to preserve the original function's local self metadata.
  if (mayBindDynamicSelf(Callee)) {
    // Check if passed Self is the same as the Self of the caller.
    // In this case, it is safe to inline because both functions
    // use the same Self.
    if (AI.hasSelfArgument() && Caller->hasSelfParam()) {
      auto CalleeSelf = stripCasts(AI.getSelfArgument());
      auto CallerSelf = Caller->getSelfArgument();
      if (CalleeSelf != SILValue(CallerSelf))
        return nullptr;
    } else
      return nullptr;
  }

  // Detect self-recursive calls.
  if (Caller == Callee) {
    return nullptr;
  }

  // A non-fragile function may not be inlined into a fragile function.
  if (Caller->isSerialized() &&
      !Callee->hasValidLinkageForFragileInline()) {
    if (!Callee->hasValidLinkageForFragileRef()) {
      llvm::errs() << "caller: " << Caller->getName() << "\n";
      llvm::errs() << "callee: " << Callee->getName() << "\n";
      llvm_unreachable("Should never be inlining a resilient function into "
                       "a fragile function");
    }
    return nullptr;
  }

  // Inlining self-recursive functions into other functions can result
  // in excessive code duplication since we run the inliner multiple
  // times in our pipeline
  if (calleeIsSelfRecursive(Callee)) {
    return nullptr;
  }
//.........这里部分代码省略.........

static void addModuleDependencies(ArrayRef<ModuleDecl::ImportedModule> imports,
                                  StringRef indexStorePath,
                                  bool indexSystemModules,
                                  StringRef targetTriple,
                                  const clang::CompilerInstance &clangCI,
                                  DiagnosticEngine &diags,
                                  IndexUnitWriter &unitWriter,
                                  StringScratchSpace &moduleNameScratch) {
  auto &fileMgr = clangCI.getFileManager();

  for (auto &import : imports) {
    ModuleDecl *mod = import.second;
    if (mod->isOnoneSupportModule())
      continue; // ignore the Onone support library.
    if (mod->isSwiftShimsModule())
      continue;

    for (auto *FU : mod->getFiles()) {
      switch (FU->getKind()) {
      case FileUnitKind::Source:
      case FileUnitKind::Builtin:
        break;
      case FileUnitKind::SerializedAST:
      case FileUnitKind::DWARFModule:
      case FileUnitKind::ClangModule: {
        auto *LFU = cast<LoadedFile>(FU);
        if (auto *F = fileMgr.getFile(LFU->getFilename())) {
          std::string moduleName = mod->getNameStr();
          bool withoutUnitName = true;
          if (FU->getKind() == FileUnitKind::ClangModule) {
            withoutUnitName = false;
            auto clangModUnit = cast<ClangModuleUnit>(LFU);
            if (auto clangMod = clangModUnit->getUnderlyingClangModule()) {
              moduleName = clangMod->getTopLevelModuleName();
              // FIXME: clang's -Rremarks do not seem to go through Swift's
              // diagnostic emitter.
              clang::index::emitIndexDataForModuleFile(clangMod,
                                                       clangCI, unitWriter);
            }
          } else {
            // Serialized AST file.
            // Only index system modules (essentially stdlib and overlays).
            // We don't officially support binary swift modules, so normally
            // the index data for user modules would get generated while
            // building them.
            if (mod->isSystemModule() && indexSystemModules) {
              emitDataForSwiftSerializedModule(mod, indexStorePath,
                                               indexSystemModules,
                                               targetTriple, clangCI, diags,
                                               unitWriter);
              withoutUnitName = false;
            }
          }
          clang::index::writer::OpaqueModule opaqMod =
              moduleNameScratch.createString(moduleName);
          unitWriter.addASTFileDependency(F, mod->isSystemModule(), opaqMod,
                                          withoutUnitName);
        }
        break;
      }
      }
    }
  }
}